<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
			<swiper-item v-for="(item,i) in goods_info.pics" :key="i">
				<image :src="item.pics_big" @click="preview(i)"></image>
			</swiper-item>
		</swiper>
		<!-- 商品信息区域 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price">
				￥{{goods_info.goods_price}}
			</view>
			<!-- 信息主体区 -->
			<view class="goods-info-body">
				<!-- 商品名称 -->
				<view class="goods-name">
					{{goods_info.goods_name}}
				</view>
				<!-- 收藏 -->
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费 -->
			<view class="fy">
				快递：免运费
			</view>
		</view>
		
		<rich-text :nodes="goods_info.goods_introduce"></rich-text>
		<!-- 商品导航组件 -->
		<view class="goods_nav">
			<!-- fill控制右侧按钮的样式 -->
			<!-- click左侧按钮的点击事件 -->
			<!-- buttonClick右侧按钮的点击事件处理 -->
			<uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick">
			</uni-goods-nav>
		</view>
	</view>
</template>

<script>
	import {mapState,mapMutations,mapGetters} from 'vuex'
	export default {
		data() {
			return {
				// 商品详情对象
				goods_info:{},
				// 左侧按钮组的配置对象
				 options: [{
							icon: 'shop',
							text: '店铺',
							// info: 2,
							infoBackgroundColor:'#007aff',
							infoColor:"red"
						}, {
							icon: 'cart',
							text: '购物车',
							info: 0
						}],
					    buttonGroup: [{
					      text: '加入购物车',
					      backgroundColor: '#ff0000',
					      color: '#fff'
					    },
					    {
					      text: '立即购买',
					      backgroundColor: '#ffa200',
					      color: '#fff'
					    }
					    ]
			}
		},
		onLoad(options) {
			// 获取商品ID
			const goods_id = options.goods_id
			// 调用请求商品详情数据的方法
			this.getGoodsDetail(goods_id)
		},
		computed:{
			...mapState('m_cart',[]),
			...mapGetters('m_cart',['total'])
		},
		watch:{
			total:{
			handler(newVal){
				const findResult = this.options.find(x=>x.text==='购物车')
				if(findResult){
					findResult.info = newVal
					}
				},
				immediate:true
			}
		},
		methods: {
			...mapMutations('m_cart',['addToCart']),
			// 判断.是否点击了加入购物车按钮
			buttonClick(e){
				if(e.content.text === '加入购物车'){
					//组织一个商品地信息对象
					const goods={
						goods_id:this.goods_info.goods_id,
						goods_name:this.goods_info.goods_name,
						goods_price:this.goods_info.goods_price,
						goods_count:1,
						goods_small_logo:this.goods_info.goods_small_logo,
						goods_state:true
					}
				// 通过this调用映射过来地addToCart方法，把商品信息对象存储到购物车中
				this.addToCart(goods)
				}
			},
			// 定义请求商品详情数据的方法
			async getGoodsDetail(goods_id){
			const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
			if(res.meta.status!=200) return uni.$showMag()		
			// 解决图片底部空白间隙的问题
			res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;" ').replace(/webp/g,'jpg')
			this.goods_info = res.message
			},
			// 大图放大效果
			preview(i){
				uni.previewImage({
					// 预览时，默认显示图片的索引
					current:i,
					// 所有图片的url地址的数组
					urls:this.goods_info.pics.map(x => x.price_big)
				})
			},
			//左侧按钮的点击事件
			onClick(e){
				if(e.content.text === '购物车'){
					// 切换到购物车页面
					uni.switchTab({
						url:"/pages/cart/cart"
					})
				}
			}
		}
	}
</script>

<style lang="scss">
swiper{
	height: 750rpx;
	
	image{
		width: 100%;
		height: 100%;
	}
}

// 商品介绍
.goods-info-box{
	padding: 10px;
	padding-right: 0;
	.price{
		color: #C00000;
		font-size: 18px;
		margin:10px 0;
	}
	.goods-info-body{
		display: flex;
		justify-content: space-between;
		.goods-name{
			font-size: 13px;
			margin-right: 10px;
		}
		.favi{
			width: 120px;
			font-size: 12px;
			display: flex;
			flex-direction: column;
			align-items: center;
			justify-content: center;
			border-left: 1px solid #efefef;
			color: gray;
		}
	}
	.yf{
		font-size: 10px;
		color:red;
		margin: 10px 0;
	}
}

.goods_nav{
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
}

.goods-detail-container{
	padding-bottom: 50px;
}
</style>
